Vaisala K-PATENTS PR-23 AX Series, Instruction Manual

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A Glossary and abbreviations
• CCD = C harge C ouple D evice, sensor optical element
• CORE, CORE Optics = C ompact O ptical R igid E lement: All measuring components
are in one solid module, the CORE (Optics) module.
• DTR = Indicating transmitter DTR, Dual sensor indicating transmitter of a PR-23
refractometer system.
• LCD = L iquid C rystal D isplay, used as transmitter display.
• LED = L ight E mitting D iode, the light source in a PR-23 refractometer sensor.
• n
D
= Refractive index (of a liquid), see Section 1.2.
• Sensor code:
-AC = 3A approved, Compact model
-AP = 3A approved, Probe model
-GP = General purpose, Probe model
-M = Teflon body refractometer for chemically aggressive liquids in small pipes
-MS = Teflon body refractometer for semiconductor liquid chemical processes -SD
= Safe-Drive™ sensor for the Safe-Drive™ system for safe sensor insertion and re-
moval
-W = Saunders body refractometer for chemically aggressive liquids in large pipes
-...-AX = ATEX approved sensor, modified for use in potentially explosive atmos-
phere
-...-CS = CS approved sensor, modified for use in potentially explosive atmosphere
-...-FM = FM approved sensor, modified for use in potentially explosive atmosphere
-...-IA = ATEX approved sensor for hazardous locations in Zone 0 and Zone 1
• STR = Indicating transmitter STR, Single sensor indicating transmitter for haz-
ardous locations and divert control systems